Notification appliance



FIG. 1 is a perspective view of a notification appliance;

FIG. 2 a front view of the notification appliance of FIG. 1;

FIG. 3 is a left side view of the notification appliance of FIG. 1;

FIG. 4 is a top plan view of the notification appliance of FIG. 1;

FIG. 5 is a bottom plan view of the notification appliance of FIG. 1; and,

FIG. 6 is a back view of the notification appliance of FIG. 1.

The broken lines illustrate portions of the notification appliance that form no part of the claimed design. 

CLAIM The ornamental design for a notification appliance, as shown and described. 